Modified Battery Box Lids

I printed some of the great [battery boxes by Bpapilot](https://www.thingiverse.com/thing:1940520) in PLA. But I had a hard time mounting the lids to the boxes, breaking two of them apart.

I made a small change to the lids by cutting out one of the holes all the way to the back. That enabled me to simply attach the lids to the boxes without losing the function.